| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <grpc/grpc.h> |
| |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/filters/client_channel/client_channel.h" |
| #include "src/core/ext/filters/client_channel/resolver_registry.h" |
| #include "src/core/ext/transport/chttp2/client/authority.h" |
| #include "src/core/ext/transport/chttp2/client/chttp2_connector.h" |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/surface/api_trace.h" |
| #include "src/core/lib/surface/channel.h" |
| |
| static void client_channel_factory_ref( |
| grpc_client_channel_factory* cc_factory) {} |
| |
| static void client_channel_factory_unref( |
| grpc_client_channel_factory* cc_factory) {} |
| |
| static grpc_subchannel* client_channel_factory_create_subchannel( |
| grpc_client_channel_factory* cc_factory, const grpc_subchannel_args* args) { |
| grpc_subchannel_args final_sc_args; |
| memcpy(&final_sc_args, args, sizeof(*args)); |
| final_sc_args.args = grpc_default_authority_add_if_not_present(args->args); |
| grpc_connector* connector = grpc_chttp2_connector_create(); |
| grpc_subchannel* s = grpc_subchannel_create(connector, &final_sc_args); |
| grpc_connector_unref(connector); |
| grpc_channel_args_destroy(const_cast<grpc_channel_args*>(final_sc_args.args)); |
| return s; |
| } |
| |
| static grpc_channel* client_channel_factory_create_channel( |
| grpc_client_channel_factory* cc_factory, const char* target, |
| grpc_client_channel_type type, const grpc_channel_args* args) { |
| if (target == nullptr) { |
| gpr_log(GPR_ERROR, "cannot create channel with NULL target name"); |
| return nullptr; |
| } |
| // Add channel arg containing the server URI. |
| grpc_core::UniquePtr<char> canonical_target = |
| grpc_core::ResolverRegistry::AddDefaultPrefixIfNeeded(target); |
| grpc_arg arg = grpc_channel_arg_string_create( |
| const_cast<char*>(GRPC_ARG_SERVER_URI), canonical_target.get()); |
| const char* to_remove[] = {GRPC_ARG_SERVER_URI}; |
| grpc_channel_args* new_args = |
| grpc_channel_args_copy_and_add_and_remove(args, to_remove, 1, &arg, 1); |
| grpc_channel* channel = |
| grpc_channel_create(target, new_args, GRPC_CLIENT_CHANNEL, nullptr); |
| grpc_channel_args_destroy(new_args); |
| return channel; |
| } |
| |
| static const grpc_client_channel_factory_vtable client_channel_factory_vtable = |
| {client_channel_factory_ref, client_channel_factory_unref, |
| client_channel_factory_create_subchannel, |
| client_channel_factory_create_channel}; |
| |
| static grpc_client_channel_factory client_channel_factory = { |
| &client_channel_factory_vtable}; |
| |
| /* Create a client channel: |
| Asynchronously: - resolve target |
| - connect to it (trying alternatives as presented) |
| - perform handshakes */ |
| grpc_channel* grpc_insecure_channel_create(const char* target, |
| const grpc_channel_args* args, |
| void* reserved) { |
| grpc_core::ExecCtx exec_ctx; |
| GRPC_API_TRACE( |
| "grpc_insecure_channel_create(target=%s, args=%p, reserved=%p)", 3, |
| (target, args, reserved)); |
| GPR_ASSERT(reserved == nullptr); |
| // Add channel arg containing the client channel factory. |
| grpc_arg arg = |
| grpc_client_channel_factory_create_channel_arg(&client_channel_factory); |
| grpc_channel_args* new_args = grpc_channel_args_copy_and_add(args, &arg, 1); |
| // Create channel. |
| grpc_channel* channel = client_channel_factory_create_channel( |
| &client_channel_factory, target, GRPC_CLIENT_CHANNEL_TYPE_REGULAR, |
| new_args); |
| // Clean up. |
| grpc_channel_args_destroy(new_args); |
| |
| return channel != nullptr ? channel |
| : grpc_lame_client_channel_create( |
| target, GRPC_STATUS_INTERNAL, |
| "Failed to create client channel"); |
| } |